Looking at your roster, you look pretty stacked on the hitting side. Great everything, although perhaps 3B could be better (I like Beltre & Blaylock as a player with a lot of potential). Only question is with 3 3B, I don't think you'll get them in, and it may be worthwhile to drop the last guy and add another pitcher (below). Same with Lee/Lawton... will they ever see the "daylight" of an active roster spot?

For pitching, do you have enough closers to win saves? I see 3 (Urbina, Williamson, Julio) none of whom will be a top closer (like Wagner, Nen, Sasaki, Rivera... although Urbina may be). Anderson may hurt you, although he may be ok. Dotel & Rhodes are both great in a role like that, but along with Vizcaino & Veres won't get saves. That basically gives you 3 average closers and one poor closer.

Another few guys you may want to look into for the relief role are:
Felix Rodriguez (great set-up man)
Mike Remlinger (could replace at the closer role; consistently great numbers)
Francico Rodriguez

I agree with that assessment...your bullpen is a little weak despite your strategy. Urbina and Julio are no lock for saves or a solid ERA and WHIP althoug I like urbina a whole lot more than Julio. With Julio and Urbina you may sacrifice pts in your ERA and WHIP for a few saves. Your SP armas may also end up doing more harm than good. His ERA and WHIP could hurt you and he won't get enough wins for the 'spos to keep him in your lineup.
I would look to find some more solid era/whip guys.

as for your offense, looks good though SS and 3B may haunt you this year, as your players there could go either way.

I don't think a trade is necessary yet. Unless you are the kind of player who likes to make a lot of trades (I know plenty of people who are), I would wait to see how things shake out with your team. Guys like Urbina may surprise you, plus with Beltran hurt right now, you may not wanna risk dealing Chipper - before you know it your OF will start looking weak.